Introduce new system Pipeline behavior

[AndreasLrx]

Description

Introduce System Pipelines and Phases to have better control of system execution order.
This will be improved with #181

Close: #184

What type of PR is this? (check all applicable)

• Refactor
• Feature
• Bug Fix
• Optimization
• Documentation Update

[optional] Minor fixes

Added/updated tests?

• New tests written
• Existing tests updated
• Tests are not required because this is a documentation update
• I need help with writing tests

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 70.68966% with 17 lines in your changes missing coverage. Please review.

Project coverage is 82.18%. Comparing base (19680ae) to head (414ba23).

Files with missing lines	Patch %	Lines
src/ecstasy/system/Pipeline.cpp	69.56%	7 Missing and 7 partials ⚠️
src/ecstasy/registry/Registry.hpp	0.00%	3 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #185      +/-   ##
==========================================
+ Coverage   82.13%   82.18%   +0.04%     
==========================================
  Files          67       68       +1     
  Lines        1159     1201      +42     
  Branches      361      371      +10     
==========================================
+ Hits          952      987      +35     
  Misses        145      145              
- Partials       62       69       +7     

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